For higher speed or higher torque applications, these GT series timing belt pulleys provide a more precise fit than HTD pulleys. Use them where accuracy is critical, such as in storage and retrieval systems or in robotics. Similar to HTD timing belt pulleys, their teeth are curved for high strength. The curved teeth create positive grip engagement with timing belts, so these pulleys do not require re-tensioning—unlike drives using V-belts or sheaves. And unlike chain drives, there’s no metal-on-metal contact, so these pulleys don’t require lubrication.

Anodized aluminum pulleys are lightweight and resist corrosion. They have a finished bore and come with set screws for mounting on shafts.

For technical drawings and 3-D models, click on a part number.

Press-Fit Mount

With Hub—Two Flanges

For 9 mm Maximum Belt Width
Number of Teeth	Pitch, mm	For Shaft Diameter	Bore Type	Inside Width, mm	Outside Width, mm	Overall Width, mm	Pitch Diameter, mm	Number of Flanges	Fabrication	Material	Hub Diameter, mm		Each
34	3	1/4"	Finished	10.16	13.46	21.16	32.461	2	Machined	Anodized Aluminum	23.39	00000000	000000
36	3	1/4"	Finished	10.16	13.46	21.16	34.366	2	Machined	Anodized Aluminum	25.4	00000000	00000
38	3	1/4"	Finished	10.16	13.46	21.16	36.297	2	Machined	Anodized Aluminum	27.31	00000000	00000
40	3	1/4"	Finished	10.16	13.46	21.16	38.202	2	Machined	Anodized Aluminum	29.21	00000000	00000
44	3	1/4"	Finished	10.16	13.46	21.16	42.012	2	Machined	Anodized Aluminum	33.02	0000000	00000
45	3	1/4"	Finished	10.16	13.46	21.16	42.977	2	Machined	Anodized Aluminum	31.75	00000000	00000